PDF Solutions, Inc. (NASDAQ:PDFS – Get Rating) saw a significant growth in short interest in April. As of April 15th, there was short interest totalling 562,000 shares, a growth of 16.9% from the March 31st total of 480,600 shares. Based on an average daily trading volume, of 183,800 shares, the short-interest ratio is presently 3.1 […]